Chemists familiar with conventional quantum mechanics will applaud and benefit greatly from this particularly instructive, thorough and clearly written exposition of density functional theory: its basis, concepts, terms, implementation, and performance in diverse applications. Users of DFT for structure, energy, and molecular property computations, as well as reaction mechanism studies, are guided to the optimum choices of the most effective methods. Well done! Paul von Ragu Schleyer A conspicuous hole in the computational chemists library is nicely filled by this book, which provides a wide-ranging and pragmatic view of the subject.[...It] should justifiably become the favorite text on the subject for practitioners who aim to use DFT to solve chemical problems. J. F. Stanton, J. Am. Chem. Soc. The authors aim is to guide the chemist through basic theoretical and related technical aspects of DFT at an easy-to-understand theoretical level. They succeed admirably. P. C. H. Mitchell, Appl. Organomet. Chem. The authors have done an excellent service to the chemical community. [...] A Chemists Guide to Density Functional Theory is exactly what the title suggests.